I've been looking at the little 7 inch monitors on amazon and Newegg, I haven't been able to be sure that they all don't need a graphics card or special configuration to have the monitor be a true 3rd monitor that is not a clone of one of the other two. The newegg 7 says it doesn't require a graphics card, but does not say anything about whether it would just try to display one of the existing screens if you have one.
So are all the usb monitors capable of being a 3rd window on all configurations or only special OS's, graphics cards, graphics drivers capable of making it so?
